Use case:
- environment where IPA server has private IP address and needs to be reachable from outside using port forwarding (cloud)

Current behavior:
- now we're looking on all interfaces and if the IP is not found we show warning.

Change request:
- check if the IP provided with --ip-address have all ports forwarded toward our server.

Proposal:
- start listening on all needed ports and try to connect to them on specified IP address (maybe conncheck can be modified and reused)